Turkic etymology :

Comments:Егоров 26-27, Федотов 1, 43-45. An isolated Chuv. form, but probably archaic (cf. the external evidence). Cf. also Karakh. (MK Oghuz) aŋ 'an exclamation meaning "no"' (see EDT 165) - but it is a hapax, occurs only within a reduplication aŋaŋ, does not regularly correspond to Chuv. an and may be just onomatopoeic.

Comments:JLTT 424, 697, 835. *-(a)n- is a verbal negation, probably reflecting the original first vowel of the root *an- (preserved because of the loss of final -i in an auxiliary verbal morpheme). *ìná is a regular reflex of *ā̀ni, while the adjective *nà- 'lacking, non-existent' reveals a secondary loss of initial vowel.